Search for vulnerabilities
Vulnerability details: VCID-x8x7-aa9q-d7fj
Vulnerability ID VCID-x8x7-aa9q-d7fj
Aliases CVE-2022-42705
Summary A use-after-free in res_pjsip_pubsub.c in Sangoma Asterisk 16.28, 18.14, 19.6, and certified/18.9-cert2 may allow a remote authenticated attacker to crash Asterisk (denial of service) by performing activity on a subscription via a reliable transport at the same time that Asterisk is also performing activity on that subscription.
Status Published
Exploitability 0.5
Weighted Severity 5.9
Risk 3.0
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-416 Use After Free
System Score Found at
epss 0.00771 https://api.first.org/data/v1/epss?cve=CVE-2022-42705
epss 0.00771 https://api.first.org/data/v1/epss?cve=CVE-2022-42705
epss 0.00771 https://api.first.org/data/v1/epss?cve=CVE-2022-42705
epss 0.00771 https://api.first.org/data/v1/epss?cve=CVE-2022-42705
epss 0.00771 https://api.first.org/data/v1/epss?cve=CVE-2022-42705
epss 0.00771 https://api.first.org/data/v1/epss?cve=CVE-2022-42705
epss 0.00771 https://api.first.org/data/v1/epss?cve=CVE-2022-42705
epss 0.00771 https://api.first.org/data/v1/epss?cve=CVE-2022-42705
epss 0.00771 https://api.first.org/data/v1/epss?cve=CVE-2022-42705
epss 0.00771 https://api.first.org/data/v1/epss?cve=CVE-2022-42705
epss 0.00771 https://api.first.org/data/v1/epss?cve=CVE-2022-42705
epss 0.00771 https://api.first.org/data/v1/epss?cve=CVE-2022-42705
epss 0.00771 https://api.first.org/data/v1/epss?cve=CVE-2022-42705
epss 0.00771 https://api.first.org/data/v1/epss?cve=CVE-2022-42705
epss 0.00771 https://api.first.org/data/v1/epss?cve=CVE-2022-42705
cvssv3.1 6.5 https://downloads.asterisk.org/pub/security/AST-2022-008.html
ssvc Track https://downloads.asterisk.org/pub/security/AST-2022-008.html
cvssv3.1 6.5 https://lists.debian.org/debian-lts-announce/2023/02/msg00029.html
ssvc Track https://lists.debian.org/debian-lts-announce/2023/02/msg00029.html
cvssv3.1 6.5 https://nvd.nist.gov/vuln/detail/CVE-2022-42705
cvssv3.1 6.5 https://www.debian.org/security/2023/dsa-5358
ssvc Track https://www.debian.org/security/2023/dsa-5358
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2022-42705
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-23537
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-23547
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-31031
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-37325
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-39244
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-39269
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-42705
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-42706
AST-2022-008.html https://downloads.asterisk.org/pub/security/AST-2022-008.html
cpe:2.3:a:sangoma:asterisk:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:sangoma:asterisk:*:*:*:*:*:*:*:*
cpe:2.3:a:sangoma:asterisk:20.0.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:sangoma:asterisk:20.0.0:*:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:18.9:cert2:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:sangoma:certified_asterisk:18.9:cert2:*:*:*:*:*:*
CVE-2022-42705 https://nvd.nist.gov/vuln/detail/CVE-2022-42705
dsa-5358 https://www.debian.org/security/2023/dsa-5358
msg00029.html https://lists.debian.org/debian-lts-announce/2023/02/msg00029.html
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Found at https://downloads.asterisk.org/pub/security/AST-2022-008.html
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2025-04-24T14:25:02Z/ Found at https://downloads.asterisk.org/pub/security/AST-2022-008.html
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Found at https://lists.debian.org/debian-lts-announce/2023/02/msg00029.html
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2025-04-24T14:25:02Z/ Found at https://lists.debian.org/debian-lts-announce/2023/02/msg00029.html
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2022-42705
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Found at https://www.debian.org/security/2023/dsa-5358
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2025-04-24T14:25:02Z/ Found at https://www.debian.org/security/2023/dsa-5358
Exploit Prediction Scoring System (EPSS)
Percentile 0.72569
EPSS Score 0.00771
Published At July 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T09:06:49.212696+00:00 Alpine Linux Importer Import https://secdb.alpinelinux.org/v3.20/main.json 37.0.0